Super glue is often overlooked as a tool for kinky fun, probably because of all the horror stories involving super glue. A prank from April Fools' Day comes to mind, someone got glued to a toilet. Another one that stuck with me was when four women glued a man's cock to his stomach. Both of those guys end up in the emergency room for treatment, but only due to the lack of proper knowledge and tools. I would have been able to unglue both of them right then and there.
Super glue is one of those things that's fun to play with on a rare occasion, but first I want to go over some precautions and warnings. If you just want to skip ahead to the fun stuff, then go ahead. To minimize skin irritation you want just plain super glue. Not something with an additive, like Gorilla Super Glue (which adds rubber). Elmer's Super Glue, The Original Super Glue, and Krazy Glue are all fine. Never put super glue in any bodily openings. Do not put it on eyes/eyelids, ears, nose, mouth/lips, anus, the urethra (AKA piss hole), or even the head of the penis itself. Likewise, never play with yourself after handling super glue until your hands are clean. And always work with super glue in a well-ventilated area.
People often think super glue is near permanent, but isn't not as super as some think. There are actually many ways to break down super glue. My remover of preference is acetone, which is actually found in most nail polish removers (and is likely in one you already have), but I prefer to use 100% pure acetone. Soak a cotton ball or q-tip in acetone and work it into the area that's stuck. It's not magic so it will take some time. Rock the area back and forth and work the acetone in. Don't just pull it apart as you may rip the skin. Once free, I suggest you wash the area with soap and water, and apply lotion as both super glue and acetone dry the skin.
Another thing you can use is petroleum jelly, aka Vaseline. Again I prefer 100% pure petroleum jelly, but any seems to work. It's not as effective as acetone and takes longer to work, but is less harsh on the skin. It's also wonderful at preventing super glue from sticking. If you want to make sure you don't get super glue on a particular area, cover it in Vaseline.
There are other more harsh chemicals for removing super glue, but they work faster. Which makes them good for those off cases where you need to get free quickly. These are Z-7 Debonder, Goo Gone, and Goof Off. I like to keep some around but you can certainly get by without it.
I've got a couple more tips before I get to some fun examples. Most people and web sites say when removing super glue, to start with soap and water, which is great advice, unless the super glue hasn't set yet, in which case water will make it harden; straight acetone will work better in that case. I suggest working with the cock in a semi erect or fully erect state. You don't want the foreskin to get stuck somewhere that makes erections painful. (Or do you?) It's also a good idea to shave any area you plan on applying glue to, as hair will not only make your glue less effective, it can pull on the hair painfully. While you only have to hold super glue in place for 30 seconds, it can take up to 5 minutes to fully set, so I suggest holding off on playing with your newly glued toy for a good 5 minutes. Try not to drop any on your clothes, carpet, sheets, or other fabric, as it's hard to get it clean once it sets. I prefer to work naked with an old towel under my sub to catch any stray drops. I also suggest wearing latex gloves to avoid gluing your own fingers. Super glue will suck the moisture out of the skin it touches, so I always suggest putting lotion on the area afterwards. If it's in an area that's not obviously visible then don't worry so much about getting every last bit off the skin, it will work itself off in a couple days and is probably easier on the skin that way.
Always think about how you will remove the super glue if you need to, even if you don't plan on removing it. Let's say you want to glue a tiny cowboy hat onto your thumb, just put glue around the ring of the hat. Don't cover your entire thumb in glue and stick the hat on there! That's so much more glue you have to remove. Also consider reachability; you could go one step further and only put a dab of glue in the very top of the hat and then stick it on your thumb. But now how are you going to work any glue remover into the top of that hat? You'd probably have to just pour and hope it reaches the glue, and if the hat is on too tight there's could be no easy way to reach it.
Now on to the fun stuff. You can glue the underside of your sub's cock to his balls so as his erection grows it pulls on them. It's a frustratingly fun situation for your sub to be in. And depending on how far under/along his balls you glue his cock, this is can be an effective form of chastity. Similarly, gluing the sub's foreskin closed over his cock can be another form of fun frustration to play with. If the sub is uncut or otherwise has rather long foreskin, an erection may be possible. This allows you to take things further than teasing and have sex with your sub without him coming. I suppose some might be able to reach orgasm, but most won't be able to due to the lack of friction in sensitive areas. Although I recommend being very careful that super glue is dry before trying anything with sex and a glued cock.
You can super glue your pet's cock to his stomach like in the news story I referred to earlier. Just make a line of glue up his erect cock and attach it to his stomach. While it makes peeing difficult, it's fun for short term play. For example it makes some forms of CBT easier as his cock doesn't swing out of the way when you whip it and it can't shield his balls if those are your target. If your sub's erection pushes into his stomach when hard, you can glue some screws to his stomach pointing up. When he gets fully erect his cock will push into the pointy screws. You could even have some fun teasing him to encourage it.
You can humiliate your sub using super glue as well. If you are having a friend over you could glue his finger tips to cock. Or you could go a step further and glue a full handed grip into place. (Again make sure you only outline the hand so you can free his hand easier.) Another idea would be to glue bra cups to his chest to give him breasts. You could even attach a pretty pink bow to his cock and make him wear it for a day.
You can glue a condom on your pet's cock and make him come in public. Do not coat the entire cock or any of the head of the cock, just glue the edge of the condom. (Remember the hat example?) Do any setup you need to before putting the condom on him. You can hook up stim pads if you have a remote estim device, or with a little work you can fit an egg vibrator in with the condom. Condoms can really stretch a lot, but if you must you can tape a vibrator to the outside of the condom in a strategic location. (I'd hate to glue it.) When gluing the condom on be careful not to get glue on any wires; you can coat them in petroleum jelly to make sure they don't stick to the super glue. Now you can privately turn the remote device on out in public and let run to completion, and have no mess. Bring some bandage shears to free him should he need to get out of the condom immediately.
As you can see, super glue opens up some new possibilities. It can actually be a bit of fun if you were the type of kid who liked craft time. If you've never played with super glue before I suggest you test it out first. It does take some time to remove the glue, so it's a good idea to understand the process before trying it on someone else. When I get a new glue remover I will sometimes glue my thumb and forefinger together to test it out. You can do the same or try it out on something you were going to throw away anyway. Of course a lot of project don't need to be removed. The pink bow idea I mentioned is safe to leave on till it comes off on it's own, and pretty much anything you glue to the balls will come off in 24 hours.